JP3192152U - Tool with replaceable drive head - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a tool in which a drive head is not easy to escape, the drive head can be easily replaced, the drive head can be swiveled, the number of parts is small, the structure is simple, and the assembly work is easy. do. SOLUTION: The center axis 11 is provided, the fitting end inner edge 12 is provided, and a slide groove is provided in the circumferential direction. The fitting end inner edge is between a large number of corner portions 14 and these corner portions. A large number of retaining edges 15 are provided so that the distance from the corner to the central axis is coaxial with the outer fitting 10 which is larger than the distance from the retaining edge to the central axis. 20. Includes a locking mechanism that is provided on the inner fitting, extends into the slide groove, and is manipulated to slide between the lock and release positions along the slide groove. [Selection diagram] Fig. 4

Description

  The present invention relates to a tool capable of exchanging a drive head.

  In the conventional two-stage joint, the polygonal ball-shaped head of the support rod is accommodated in the accommodating space of the work head, and the shape of the accommodating space exhibits a polygon according to the polygonal ball-shaped head. When the support rod is pushed in by the connecting structure, the support rod is fixed to the work head. When the support rod is pulled out, the support rod can pivot with respect to the work head. For example, Patent Document 1 and Patent Document 2 have been proposed.

  In the configuration of the two-stage joint of Patent Document 1, since the back wall of the storage space has a polygonal shape, the storage space is in surface contact with the polygonal ball-shaped head. When the support rod is rotated at a high speed with respect to the work head by the electric drive device, the friction between the polygonal ball-shaped head and the accommodating space is too large to be locked, and the electric drive device and the two-stage type are locked. The joint is easily damaged. Further, even if the lock is not achieved, energy is wasted due to friction, and the work efficiency is reduced.

  In order to solve the above problem, the configuration of the two-stage joint of Patent Document 2 is provided with a plurality of convex edges corresponding to the polygonal ball-shaped head on the side wall of the accommodating space. The number of edges corresponds to the number of corners of the polygonal ball-shaped head. Each of the convex edges has an arcuate contact surface that contacts the polygonal ball-shaped head. The arc-shaped contact surface allows the support rod to rotate in conjunction with the work head.

  However, the above configuration is not provided with a stop edge for effectively stopping each corner portion of the polygonal ball-shaped head. For this reason, the drive head easily escapes when rotating at high speed. In this way, the work is interrupted, and there is a possibility that the worker will be hurt.

Taiwan Utility Model No. 566284 Taiwan Utility Model No. M357344

  The main purpose of the present invention is that the drive head cannot be easily removed, the drive head can be easily replaced, the drive head can be turned, the number of parts is small, the structure is simple, and the assembly work is easy Is to provide a tool that is

  According to the tool of the present invention, it has a center axis, has an inner edge of the fitting end, and is provided with a slide groove in the circumferential direction. The inner edge of the fitting end has a number of corner portions and a space between these corner portions. A plurality of stop edges, and an outer fitting that is larger than the distance from the stop edge to the central axis, and an outer fitting that is coaxial with the outer fit. A first connection end located in the axial direction, and a second connection end located away from the first connection end, the back of the first connection end The wall is provided with a number of engaging dents extending in the axial direction. The distance from the dent to the central axis is smaller than the distance from the stop edge to the central axis. Is extended into the slide groove and operated to slide groove And a locking mechanism that is slidable between a locked position and a released position along the axial direction when the locking mechanism is positioned at the locked position when viewed from the axial direction. Is relatively non-rotatable, each engagement recess overlaps with the stop edge, and when the locking mechanism is located at the release position, the external fitment and the internal fitment become relatively rotatable, and each engagement recess is one corner. It corresponds to the part.

  According to the tool of the present invention, each stop edge is connected to two adjacent corner portions, and each corner portion is recessed along the radial direction to the inner edge of the fitting end rather than two adjacent stop portions. And

  According to the tool of the present invention, the inner fitting is provided with a hole and a hook edge extending inward along the radial direction from the edge of the hole, and the locking mechanism is an elastic provided in the hole. A locking portion is provided on the peripheral surface of the operating tool, and one end of the operating tool is inserted into the hole to contact the elastic tool, and the locking portion is positioned in the hole. However, it is characterized in that it is fixed to the engaging edge.

  According to the tool of the present invention, the operating tool includes an insertion stage, a large diameter stage, and a small diameter stage, which are connected in order, and the insertion stage has a larger radial dimension than the large diameter stage. A stepped portion is formed from the radial step, the stepped portion is a locking portion, and the insertion step is inserted into the hole.

  According to the tool of the present invention, the slide groove includes a large-diameter groove located at one end and a small-diameter groove extending from the large-diameter groove, and the locking mechanism includes an operation tool provided in the slide groove. The tool has a large-diameter step protruding from the peripheral surface of the inner fitting tool, and a small-diameter step extending from the large-diameter step, and the large-diameter step has the same dimension as the width of the large-diameter groove or a large-diameter groove The width of the small-diameter step is the same as the width of the small-diameter groove or smaller than the width of the small-diameter groove, and when viewed from the axial direction, the locking mechanism is in the locked position. When positioned, the large diameter step is positioned in the large diameter groove, and when the locking mechanism is positioned in the release position, the small diameter step is positioned in the small diameter groove.

  According to the tool of the present invention, the inner edge of the fitting end further includes an annular recess.

  According to the tool of the present invention, the driving head further includes a driving head, and the driving head includes a first end and a second end, and a pressing corner portion extending along the axial direction is formed on a peripheral surface of the first end. The first end can be attached to and detached from the first connecting end, and the maximum distance from the pressing corner portion to the central axis is smaller than the distance from the stop edge to the central axis. To do.

  According to the tool of the present invention, the first end is provided with a polygonal ball-shaped head and a radial convex edge. When the radial convex edge is in contact with the fitting end inner edge, the drive head is When the radial head is not in contact with the inner edge of the fitting end, the drive head is fixed to the inner fitting and the outer fitting with the polygonal ball-shaped head as the center. When viewed from the axial direction, each pressing corner portion overlaps with one stop edge when the locking mechanism is located at the lock position.

  According to the tool of the present invention, the back wall of the first connecting end is provided with a stepped surface facing the first end of the drive head, and when the radial convex edge is in contact with the inner edge of the fitting end, The end surface of the first end is in contact with the step surface.

  According to the tool of the present invention, a polygonal rod is provided at the first end, and when viewed from the axial direction, when the locking mechanism is located at the lock position, each pressing corner portion overlaps with one stop edge. Features.

  According to the tool of the present invention, the back wall of the first connecting end is provided with a stepped surface facing the first end of the drive head, and when the radial convex edge is in contact with the inner edge of the fitting end, The end surface of the first end is in contact with the step surface.

The tool of the present invention has the following effects.
(1) Since the outer fitting tool and the inner fitting tool can rotate relative to each other, it is possible to change the correspondence relationship between each stop edge and each pressing corner portion of the driving head. Cannot easily escape from the internal fitting, and the drive head can be easily replaced.

(2) Since the drive head can be turned relative to the inner fitting tool and the outer fitting tool, the drive head can be used in a place where the driving head cannot be easily entered. For example, screws and bolts can be attached and detached. In particular, each pressing corner portion of the drive head is regulated by the corresponding stop edge, and the drive head cannot easily escape from the internal fitting. As a result, the work is not interrupted and the worker is not injured.

(3) The number of parts is small, the structure is simple, and the assembly work is easy.

It is a perspective view which shows one Example of this invention. It is a perspective view which shows one Example of this invention. It is a disassembled perspective view which shows one Example of this invention. It is a disassembled perspective view which shows one Example of this invention. It is a side view which shows one Example of this invention. It is a side view which shows one Example of this invention. It is sectional drawing which shows one Example of this invention. It is sectional drawing which shows one Example of this invention. It is a perspective view which shows a different drive head. It is a perspective view which shows a different drive head. It is a perspective view which shows a different drive head.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
Please refer to FIG. 1 to FIG. 1 and 2 are perspective views showing one embodiment of the present invention, FIGS. 3 and 4 are exploded perspective views showing one embodiment of the present invention, and FIGS. 5 and 6 are one embodiment of the present invention. It is a side view which shows an example. The drive head replaceable tool 1 of the present embodiment includes an outer fitting tool 10, an inner fitting tool 20, and a locking mechanism 30.

  The outer fitting tool 10 has a central axis 11, a fitting end inner edge 12, and a slide groove 13 is provided in the circumferential direction. The fitting end inner edge 12 is provided with a large number of corner portions 14 and a large number of stop edges 15 positioned between the corner portions 14. The distance from the corner portion 14 to the central axis 11 is greater than the distance from the stop edge 15 to the central axis 11. Specifically, each stop edge 15 is connected to each of the two adjacent corner portions 14, and each corner portion 14 is recessed in the fitting end inner edge 12 along the radial direction from the two adjacent stop edges 15. . These corner portions 14 indicate corner portions and are not limited to open angles. For example, in the present embodiment, each corner portion 14 is an arc-shaped recess portion, but may be a sharp recess portion. By these corner portions 14, it is possible to easily insert a drive head, an adapter, a screw driver, various types of drills, and the like. The fitting end inner edge 12 further includes an annular recess 16. Thus, the fitting end inner edge 12 has a substantially inclined surface or a staircase structure. The slide groove 13 includes a large diameter groove 131 located at one end and a small diameter groove 132 extending from the large diameter groove 131. Specifically, the large-diameter groove 131 has an arc shape, and the small-diameter groove 132 has the same width and a linear shape. The degree of circular arc extending in the circumferential direction of the slide groove 13 with respect to the central axis 11 is preferably determined by the number of the corner portions 14 and the retaining edges 15. For example, when the number of the corner portions 14 and the stop edges 15 is six, it is sufficient that the extending arc of the slide groove 13 is 30 degrees (of course, even if it is 30 degrees or more). It is possible to control the relative positions of the outer fitting tool 10 and the inner fitting tool 20 in this way. A polygonal groove 17 is provided at the other end of the outer fitting 10 that faces the inner edge 12 of the fitting end. It is possible to insert a driving device into the polygonal groove 17 and connect them. The drive device is an electric drive device, an air drive device, or a manual tool such as a spanner or screw driver. However, it is also possible to connect the polygonal groove 17 by inserting tools such as a drive head, an adapter, a screw driver, and various types of drills.

  Please refer to FIG. 7 and FIG. 7 and 8 are sectional views showing an embodiment of the present invention. The inner fitting tool 20 is provided so as to be rotatable relative to the outer fitting tool 10 so as to be coaxial with the outer fitting tool 10, and is provided with a first connecting end 21 and a first connecting end 21 positioned in the axial direction. A second connecting end 22 that is away from the second connecting end 22. The back wall of the first connecting end 21 is provided with many engaging recesses 23 extending along the axial direction. The distance from the engagement recess 23 to the central axis 11 is smaller than the distance from the stop edge 15 to the central axis 11. These engagement recesses 23 facilitate the insertion of tools such as drive heads, adapters, screwdrivers, and various types of drills. The above-mentioned tool can be brought into contact with these engaging edges 25 and locked. When a driven tool such as a screw driver or various types of drills is assembled to the first connecting end 21 and the fitting end inner edge 12, for example, an electric drive device or an air drive device is assembled to the polygonal groove 17. Yes. On the other hand, when an electric drive device or an air drive device is assembled to the first connecting end 21 and the fitting inner edge 12, for example, a driven tool such as a screw driver or various types of drills is placed in the polygonal groove 17. It is assembled. The inner fitting 20 is provided with a hole 24 and an engagement edge 25 extending inward from the edge of the hole 24 along the radial direction.

  The locking mechanism 30 is provided in the internal fitting 20 and extends into the slide groove 13, and can be operated to slide between the lock position and the release position along the slide groove 13. Specifically, the locking mechanism 30 includes an elastic tool 31 provided in the hole 24 and an operation tool 32. A locking portion 321 is provided on the peripheral surface of the operation tool 32. One end of the operation tool 32 is inserted into the hole 24 and comes into contact with the elastic tool 31. The locking portion 321 is located in the hole 24 and is fixed to the engaging edge 25. Specifically, the operation tool 32 includes an insertion stage 322, a large diameter stage 323, and a small diameter stage 324 that are connected in order. The insertion step 322 has a larger radial dimension than the large-diameter step 323, and a step portion is formed from the large-diameter step 323. The staircase portion is a locking portion 321, and the insertion step 322 is inserted into the hole 24. The large diameter step 323 of the operation tool 32 protrudes from the peripheral surface of the inner fitting tool 20. The small diameter step 324 extends from the large diameter step 323. The large diameter step 323 has the same dimension as the width of the large diameter groove 131 or smaller than the width of the large diameter groove 131 and larger than the width of the small diameter groove 132. The small diameter step 324 has the same dimension as the width of the small diameter groove 132 or is smaller than the width of the small diameter groove 132. When viewed from the axial direction, the large-diameter step 323 is positioned in the large-diameter groove 131 when the locking mechanism 30 is located at the locking position, and the small-diameter step 324 is positioned when the locking mechanism 30 is positioned at the release position. Located in the small diameter groove 132.

  The drive head replaceable tool 1 of this embodiment further includes a drive head 40. The drive head 40 includes a first end 41 and a second end 42. A large number of pressing corner portions 43 extending along the axial direction are provided on the peripheral surface of the first end 41. The first end 41 can be attached to and detached from the first connecting end 21. The maximum distance from the pressing corner 43 to the central axis 11 is smaller than the distance from the stop edge 15 to the central axis 11. In the present embodiment, the first end 41 is provided with a polygonal ball-shaped head 411 and a radial convex edge 412. The diameter of the portion between the polygonal ball-shaped head 411 and the radial convex edge 412 is smaller than the diameter of the polygonal ball-shaped head 411 and the radial convex edge 412. A square joint 420 is formed at the second end 42. A driving device can be connected to the rectangular joint 420. The drive device is an electric drive device, an air drive device, or a manual tool such as a spanner and screw driver. However, it is also possible to assemble tools such as an adapter, a screw driver, and various types of drills to the square joint 420.

  Please refer to FIG. FIG. 9 is a perspective view showing the drive head 40a. A hexagonal rod 421 (which can be a hexagon wrench) is formed at the second end of the drive head 40a. FIG. 10 is a perspective view showing the drive head 40b. Although the bush 422 is formed at the second end of the drive head 40b, the present invention is not limited to these. Of course, for example, a driver head or a drill may be formed at the second end of the drive head 40b.

  Actually, when the locking mechanism 30 is located at the locked position, the elastic tool 31 urges the operating tool 32, and the large-diameter step 323 always has a large diameter as shown in FIGS. Located in the groove 131, the outer fitting tool 10 and the inner fitting tool 20 are relatively unrotatable, and when viewed from the axial direction, each engagement recess 23 overlaps the stop edge 15 as shown in FIGS. 5 and 8. . When the operation tool 32 is pressed to move the large diameter step 323 away from the large diameter groove 131 and the operation tool 32 is moved and the small diameter step 324 is positioned in the small diameter groove 132 as shown in FIG. Is located at the release position so that the outer fitting tool 10 and the inner fitting tool 20 can rotate relative to each other. As shown in FIGS. 6 and 7, each engagement recess 23 has one corner portion 14. Corresponding to

  A drive head 40 provided with a polygonal ball-shaped head 411 and a radial convex edge 412 will be described as an example. When the locking mechanism 30 is located at the release position and each engagement recess 23 corresponds to one corner portion 14, each pressing corner portion 43 of the drive head 40 can enter the inner fitting 20. . As shown in FIG. 1, when the radial convex edge 412 is in contact with the inner end 12 of the fitting end, the drive head 40 is fixed to the inner fitting 20 and the outer fitting 10 and sways during use. The working efficiency can be increased, and the user can easily apply a force to the driving head 40. As shown in FIG. 2, when the radial convex edge 412 is not in contact with the inner end 12 of the fitting end, the drive head 40 can turn relative to the inner fitting tool 20 and the outer fitting tool 10. Is possible. As described above, the drive head can be used in a place where it cannot easily enter, and a fastener (for example, a screw or a bolt) can be attached or detached. When viewed from the axial direction, when the locking mechanism is located at the locking position, as shown in FIGS. 5 and 8, each pressing corner portion 43 overlaps with one stop edge 15. Thus, each pressing corner portion 43 is restricted by the corresponding stop edge 15 so that the drive head 40 cannot easily escape from the inner fitting tool 20. For this reason, the drive head 40 is fixed to the inner fitting tool 20 and the outer fitting tool 10, or the driving head 40 can turn relative to the inner fitting tool 20 and the outer fitting tool 10. In a certain state, the drive head 40 cannot easily escape from the inner fitting 20, and thus the work is not interrupted and the worker is not injured.

  On the back wall of the first connecting end 21 of the inner fitting 20, a stepped surface 26 facing the first end 41 of the drive head 40 is provided. When the radial convex edge 412 is in contact with the fitting end inner edge 12, the end surface of the first end 41 is in contact with the step surface 26. As described above, the assembly of the drive head 40 with the inner fitting tool 20 and the outer fitting tool 10 becomes more stable, and even when applied to, for example, an impact tool, it is not easily damaged.

  The drive head of this embodiment may be provided with a polygonal rod 44 at the first end 41b of the drive head 40c, as shown in FIG. 11, in addition to the polygonal ball-shaped head described above. Please refer to FIG. 5 and FIG. When viewed from the axial direction, each pressing corner portion 45 of the polygonal rod 44 overlaps one stop edge 15 when the locking mechanism 30 is located at the locking position. Thus, the drive head 40c cannot escape from the internal fitting 20 easily.

  Although various embodiments and modifications have been described above, the present invention is not limited to these contents. Other embodiments conceivable within the scope of the technical idea of the present invention are also included in the scope of the present invention.

  The present invention can be applied to a tool.

DESCRIPTION OF SYMBOLS 1 Drive head exchangeable tool 10 Outer fitting tool 11 Center axis 12 Fitting end inner edge 13 Slide groove 14 Corner part 15 Stop edge 16 Annular recess 17 Polygonal groove 20 Inner fitting tool 21 First connecting end 22 Second connecting end 23 Depression 24 Hole 25 Engagement edge 26 Staircase surface 30 Locking mechanism 31 Elastic tool 32 Operating tool 40 Drive head 40a Drive head 40b Drive head 40c Drive head 41 First end 41b First end 42 Second end 43 Pressing corner portion 44 Polygon Rod 45 Pressing corner portion 131 Large diameter groove 132 Small diameter groove 321 Locking portion 322 Insertion step 323 Large diameter step 324 Small diameter step 411 Polygonal ball-shaped head 412 Radial convex edge 420 Square joint 421 Hexagonal rod 422 Bush

Claims (11)

It has a central axis, has an inner edge of the fitting end, and is provided with a slide groove in the circumferential direction. The inner edge of the fitting end has a number of corner portions and a number of corner portions positioned between the corner portions. A stop edge, and an outer fitting having a distance from the corner portion to the central axis larger than a distance from the stop edge to the central axis,
A first connecting end, which is rotatably fitted to the outer fitting so as to be coaxial with the outer fitting, and is located in the axial direction; and a second connecting end away from the first connecting end And a plurality of engagement recesses extending along the axial direction are provided on the back wall of the first connecting end, and the distance from the engagement recess to the central axis is from the stop edge to the center. An inner fitting smaller than the distance to the axis,
A locking mechanism that is provided on the inner fitting, extends into the slide groove, and can be operated to slide between a lock position and a release position along the slide groove;
In the tool including
When viewed from the axial direction, when the locking mechanism is located at the locked position, the outer fitting tool and the inner fitting tool are relatively non-rotatable, and the engagement recesses overlap the stop edge, and When the stop mechanism is located at the release position, the outer fitting tool and the inner fitting tool can be rotated relative to each other, and each of the engagement recesses corresponds to one corner portion.   Each stop edge is connected to two adjacent corner portions, respectively, and each corner portion is recessed to the inner edge of the fitting end along the radial direction from two adjacent stop edges. The tool according to claim 1.   The inner fitting is provided with a hole and an engagement edge extending inward along the radial direction from the edge of the hole, and the locking mechanism is an elastic tool provided in the hole; A locking portion is provided on a peripheral surface of the operating tool, and one end of the operating tool is inserted into the hole to contact the elastic tool, and the locking portion is The tool according to claim 1, wherein the tool is located in a hole and is fixed to the engaging edge.   The operation tool includes an insertion stage, a large diameter stage, and a small diameter stage, which are connected in order, and the insertion stage has a radial dimension larger than the large diameter stage, and the large diameter stage. The tool according to claim 3, wherein a step portion is formed from the step, the step portion is used as the locking portion, and the insertion step is inserted into the hole. The slide groove includes a large-diameter groove located at one end and a small-diameter groove extending from the large-diameter groove, and the locking mechanism includes an operation tool provided in the slide groove, A large-diameter step projecting from the peripheral surface of the inner fitting, and a small-diameter step extending from the large-diameter step, the large-diameter step having the same dimensions as the width of the large-diameter groove, or The width of the small-diameter groove is smaller than the width of the large-diameter groove and larger than the width of the small-diameter groove.
When viewed from the axial direction, when the locking mechanism is located at the locked position, the large-diameter step is located in the large-diameter groove, and when the locking mechanism is located at the release position, the small-diameter step is The tool according to claim 1, wherein the tool is located in the small-diameter groove.   The tool according to claim 1, wherein the inner edge of the fitting end further includes an annular recess.   The driving head further includes a first end and a second end, and a plurality of pressing corner portions extending along the axial direction are provided on a peripheral surface of the first end. The first end can be attached to and detached from the first connecting end, and a maximum distance from the pressing corner portion to the central axis is smaller than a distance from the stop edge to the central axis. The tool according to any one of claims 1 to 6. The first end is provided with a polygonal ball-shaped head and a radial convex edge,
When the radial convex edge is in contact with the inner edge of the fitting end, the drive head is fixed to the inner fitting tool and the outer fitting tool,
When the radial convex edge is not in contact with the inner edge of the fitting end, the drive head can turn with respect to the inner fitting tool and the outer fitting tool around the polygonal ball-shaped head. And
The tool according to claim 7, wherein when viewed from the axial direction, each pressing corner portion overlaps one of the stop edges when the locking mechanism is located at the locked position.   The back wall of the first connecting end is provided with a stepped surface facing the first end of the drive head, and when the radial convex edge is in contact with the inner edge of the fitting end, The tool according to claim 8, wherein one end face abuts on the stepped surface.   A polygonal rod is provided at the first end, and when viewed from the axial direction, when the locking mechanism is located at the lock position, each pressing corner portion overlaps one stop edge. The tool according to claim 7.   The back wall of the first connecting end is provided with a stepped surface facing the first end of the drive head, and when the radial convex edge is in contact with the inner edge of the fitting end, The tool according to claim 10, wherein one end face abuts on the stepped surface.